@article{DE_2006_42_4_a7,
     author = {V. I. Fomin},
     title = {On the second-order {Euler} equation with bounded operator coefficients in a {Banach} space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {483--488},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_4_a7/}
}